<!--父级页面:控制除了登录页以外所有页面共有的头部与左侧菜单栏-->
<template>
  <!-- display: flex;给父元素使用弹性布局
   效果:所有子元素横置,且父元素会根据子元素的实际高度自动填充高度-->
  <div style="display: flex;">
    <!--isCollapse为true:折叠左侧菜单栏,左侧菜单栏宽度为64px,右侧主体宽度为calc(100% - 64px)-->
    <!--isCollapse为false:不折叠左侧菜单栏,左侧菜单栏宽度为208px,右侧主体宽度为calc(100% - 208px)-->
    <!-- 左侧菜单栏 -->
    <div :style="{width:(isCollapse ? '64px' : '208px')}">
      <el-menu background-color="#3c82f5"
               text-color="#fff"
               active-text-color="#ff0"
                style="width: 100%;height: 100vh"
                unique-opened
               :collapse="isCollapse"
               :collapse-transition="false"
               router
      >
        <el-row style="padding-top: 10px;">
          <el-col :span="2"></el-col>
          <el-col :span="7" style="padding-left: 7px">
            <el-avatar src="/imgs/admin/logo.png" style="width: 35px;height: 35px "></el-avatar>
          </el-col>
          <el-col :span="isCollapse ? 0 :13">
            <router-link to="/"
             style="text-decoration: none;color: #fff;font-weight: bold;
             position: relative;top: 8px;left: 2px">
              智慧车辆</router-link>
          </el-col>
        </el-row>
        <el-sub-menu >
          <template #title>
           <el-icon style="font-size: 21px"><User/></el-icon>
            <span> 用户管理</span>
          </template>
          <el-menu-item index="/user">用户列表</el-menu-item>
        </el-sub-menu>

      <el-sub-menu >
        <template #title>
          <el-icon style="font-size: 21px"><Van/></el-icon>
          <span> 车辆管理</span>
        </template>
        <el-menu-item index="/vehicle">基本信息</el-menu-item>
      </el-sub-menu>
      <el-sub-menu index="3">
        <template #title>
          <el-icon style="font-size: 21px"><Place/></el-icon>
          <span> 调度管理</span>
        </template>
        <el-menu-item index="/application">申请列表</el-menu-item>
        <el-menu-item index="audit">调度审核</el-menu-item>
        <el-menu-item index="/distribute">车辆分配</el-menu-item>
      </el-sub-menu>
        <el-sub-menu index="4">
          <template #title>
            <el-icon style="font-size: 21px"><Location/></el-icon>
            <span> 电子围栏</span>
          </template>
          <el-menu-item index="/geofence">围栏管理</el-menu-item>
        </el-sub-menu>
        <el-sub-menu index="5">
          <template #title>
            <el-icon style="font-size: 21px"><MessageBox/></el-icon>
            <span>数据字典</span>
          </template>
          <el-menu-item index="/dict">字典管理</el-menu-item>
        </el-sub-menu>
      </el-menu>
    </div>
    <!-- 右侧主体内容 -->
    <div :style="{width:(isCollapse ? 'calc(100% - 64px)' : 'calc(100% - 208px)')}">
<!--    右侧顶部条：折叠按钮+用户名  -->
      <el-header style="padding-top: 22px;height:10vh;background-color: #fff;">
        <el-row :gutter="10">
          <el-col :span="18">
            <el-icon style="font-size: 20px;"@click="changeCollapse"><Expand/></el-icon>
          </el-col>
          <el-col :span="6" style="position: relative;">
            <el-dropdown trigger="click" style="position: absolute;right:20px">
    <span style="font-size: 19px;font-weight: bold">
      {{user.username}}
      <el-icon ><arrow-down /></el-icon>
    </span>
              <template #dropdown>
                <el-dropdown-menu>
                  <el-dropdown-item>退出登录</el-dropdown-item>
                </el-dropdown-menu>
              </template>
            </el-dropdown>
          </el-col>
        </el-row>
      </el-header>

      <router-view/>
    </div>
  </div>

</template>

<script setup>
import {ref} from "vue";

//定义变量控制菜单栏是否折叠
const isCollapse = ref(false);
//修改菜单栏左侧菜单折叠状态
const  changeCollapse=()=>{
  isCollapse.value= !isCollapse.value;
}
//获取当前登录的用户对象
const user=ref(getUser());
</script>
